Thrift Store Find - Marilyn Monroe ® tagged groovy abstract designed cocktail(?) dress!

I liked this as soon as I saw it coming out on a rack & being rolled to the clothing section of a thrift store today - the designs on it were very 60's - 70's (my prime time!) hippie - ish. I got the dress & when I looked at the tag was I surprised; it said Marilyn Monroe® !

But it also says Made in China
It also has another tag on a slip(?) that is attached by 2 strings under the dress that says it is 95% Polyester and 5% Spandex(!) - this tag also says at the top Made in/Hecho en China - so I'm assuming it's not a old dress with the bilingual tag?
What years/years is this from? Can I call it vintage?
Is it a cocktail dress? A summer dress? (it has a flap on the lower front of the dress that made me think of a summer dress (if I'm wrong sorry; I'm a guy & am out of my league here!)

Any info would be appreciated; I know I can't be the only one who likes it - I bet Austin Powers would say "Groovy Baby" if he saw it!
Thank you!

 

Design inspiration is 1980s graffiti from designer Stephen Sprouse.

Debora

 

Brand owned by the Estate of Marilyn Monroe. Trademark filled 2018. I'd call it a summer dress.

https://trademarks.justia.com/881/59/marilyn-88159784.html

Debora

 

https://www.ebay.com/itm/224329825017?hash=item343b197af9:g:k1YAAOSw-0FgEN6R

https://www.ebay.com/itm/163707613218?hash=item261dbbf022:g:Y3YAAOSwLvFc6vA~

 

Certainly lots of visual "wow."

Debora

 

Thanks Debora - I think I'll make more selling it at my estate/yard sale - the first impression of design & then the name on tag makes it a easy sale (I hope!)
Thanks wiscbirddog - those brought me back to earth! And the first one they had to add a or best offer?? It wasn't cheap enough??!! lol

 

Could be wrong, but I wouldn't expect original '60s stuff like this to be made in China.

(Back then they were busy with the Cultural Revolution.)